EP 1293484 A1 20030319 - Process and an apparatus for biological treatment of aqueous organic wastes
Title (en)
Process and an apparatus for biological treatment of aqueous organic wastes
Title (de)
Verfahren und Vorrichtung zur biologischen Behandlung von wässeringen organischen Abfällen
Title (fr)
Procédé et appareil pour le traitement biologique de déchets organiques aqueux
Publication
Application
Priority
EP 01870196 A 20010913
Abstract (en)
The invention relates to a biological nutrients removal process of an aqueous organic waste in the presence of a biosludge, comprising the steps of: subjecting the aqueous organic waste to an aerobic biological treatment in the presence of said biosludge (4), a solid/liquid separation of the aerated aqueous suspension into a liquid fraction and a sludge fraction (5), discharging the separated liquid fraction as treated water (23) mechanical or chemical decomposing at least a portion of the separated sludge fraction resulting in the release of the supplementary of BOD and COD (7), and recycling at least a portion of the decomposed sludge to the first step of aerobic biological treatment (10) wherein the amount of BOD and COD generated is dependent upon the amount of nutrient to be removed in the separated liquid fraction. The invention further relates to an apparatus for a biological nitrogen removal process of an aqueous organic waste in the presence of a biosludge comprising aerobic microorganisms.
IPC 1-7
IPC 8 full level
C02F 3/12 (2006.01); C02F 3/30 (2006.01); C02F 1/36 (2006.01); C02F 1/72 (2006.01); C02F 1/78 (2006.01); C02F 11/06 (2006.01)
CPC (source: EP)
C02F 3/1221 (2013.01); C02F 3/301 (2013.01); C02F 1/36 (2013.01); C02F 1/722 (2013.01); C02F 1/725 (2013.01); C02F 1/78 (2013.01); C02F 11/06 (2013.01); Y02W 10/10 (2015.05)
Citation (search report)
- [XY] EP 0835845 A1 19980415 - KURITA WATER IND LTD [JP]
- [YA] WO 9941205 A1 19990819 - OMNIUM TRAITEMENT VALORISA [FR], et al
- [A] DE 19942184 A1 20010315 - MESSER GRIESHEIM GMBH [DE], et al
- [A] US 4705633 A 19871110 - BOGUSCH EUGENE D [US]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01870196 A 20010913